Browsing International Telemetering Conference Proceedings, Volume 31 (1995) by Subjects
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An Analysis of Various Digital Filter Types for Use as Matched Pre-Sample Filters in Data EncodersThe need for precise gain and phase matching in multi-channel data sampling systems can result in very strict design requirements for presample or anti-aliasing filters. The traditional use of active RC-type filters is expensive, especially when performance requirements are tight and when operation over a wide environmental temperature range is required. New Digital Signal Processing (DSP) techniques have provided an opportunity for cost reduction and/or performance improvements in these types of applications. This paper summarizes the results of an evaluation of various digital filter types used as matched presample filters in data sampling systems.